Answer:
17
Step-by-step explanation:
divide by 5 both side and q will be:
q-2=15 then take 2 to the other side which will be positive . therefore
q=17
Find the errors and correct the following mathematical sentences.
Answer:
This is your answer
The overall regression F-statistic tests the null hypothesis that:____.
a. all slope coefficients are zero.
b. all slope coefficients and the intercept are zero.
c. the intercept in the regression and at least one, but not all, of the slope coefficients is zero.
d. the slope coefficient of the variable of interest is zero, but that the other slope coefficients are not.
Answer:
A
Step-by-step explanation:
F test is a statistical method used to determine which models best fits the population from which the sample is derived. It is a ratio of two variances. Variance measure the rate of dispersion
The formula for calculating f-test = explained variance / unexplained variance
There are two hypothesis in an f test :
1. the null hypothesis - all slope coefficient are equal to zero
the alternative hypothesis : at least one of the slope coefficient is not equal to zero
30 POINTS AND BRAINLIEST!!!!!!!!!!!
Lizzy gets her paycheck every 10 days. Her husband, Don gets a paycheck every 14 days. On July 3, they both get a paycheck. How many days will pass before they both get a check on the same day
Answer:
It's been 70 days
Step-by-step explanation:
14 28 42 56 70
10 20 30 40 50 60 70
The first time they have a date in common is the 70th day.
find the equation of the circle that passes through the points (0,0), (2,0)&(3,-3)
Answer:
Step-by-step explanation:
A(0,0), B(2,0), C(3,-3)
Perpendicular bisector of AB: x=1
Perpendicular bisector of AC: y=x-3
Center of circle = intersection of perpendicular bisectors = (1,-2)
Radius = √5
(x-1)² + (y+2)² = 5
If you need to construct a dog run for your dog and the total perimeter needs to be 40 feet, and you only have enough room to make it 5 feet wide, how long can you make the dog run?
PLZZZZ ASAPPPP
Answer:
15 feet
Step-by-step explanation:
if the dog run is a rectangles then the formula for the perimeter is 2h+2l
if we plug in the numbers we know we get this:
2h+2(5)=40
2h+10=40
2h=30
h=15
For the total population of a large a southern city, mean family income is
$34,000, with a standard deviation (for the population) of $5,000. Imagine
that your are taking a subsample of 200 city residents. What is the Z score for
$37,000 ?
Answer:
The Z score for $37,000 is 8.49.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Mean family income is $34,000, with a standard deviation (for the population) of $5,000.
This means that [tex]\mu = 34000, \sigma = 5000[/tex]
Subsample of 200 city residents.
This means that [tex]n = 200, s = \frac{5000}{\sqrt{200}} = 353.55[/tex]
What is the Z score for $37,000 ?
This is Z when X = 37000. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{37000 - 34000}{353.55}[/tex]
[tex]Z = 8.49[/tex]
The Z score for $37,000 is 8.49.
If v = u + 3t find v when u = −12 and t = 3
1. -3
2. -2
3. 8
4. -4
a cylinder has a volume of 48cm³ and a height of 9 inches what is the radius
Answer:
0.82cm
Step-by-step explanation:
Answer:
r = 0.81 cm
Step-by-step explanation:
Volume of a cylinder = πxr²xh
Volume = 48cm³
Height = 9 inches = 22.86 cm
Radius = ?
Using the above formula:
V = πr²h
r² = V / (πh)
r² = 48 / (π(22.86))
r² = 48/71.81
r² = 0.67 cm
Taking square root on both sides
r = 0.81 cm Ans
Ali is cutting 3/8 in. Cookie dough slices from a 10 1/2 in. long roll how many does she get
Answer:
28 slices
Step-by-step explanation:
Take the length of the roll and divide by the size of the slice
10 1/2 ÷ 3/8
Change the mixed number to an improper fraction
(10*2 +1) /2 ÷ 3/8
21/2 ÷ 3/8
Copy dot flip
21/2 * 8/3
Rewriting
21/3 * 8/2
7 * 4
28
You will get 28 slices
d i need help on this
Step-by-step explanation:
Yes, they are similar because if you convert both of the measurements to fractions, which will be 2/3 and 8/12, you can see that if you simplify 8/12, you will get 2/3. That is why they are similar.
Four points A, B, C, and d are on a number line, in some order, so that AB=1, BC=2, CD=3, and DA=4. Which two points are farthest away from each other?
Answer: B or C sorry if its wrong
Step-by-step explanation: have a nice day
Simplify fully (2x-1)(2x+1)
Which expression correctly represents 10 times the difference of a number and six
Answer:
10(6 - x) or 10(x - 6)
Step-by-step explanation:
Let the number be x.
Answer: 10(6 - x) or 10(x - 6)
Which expression is equivalent to −3 2/3
Answer:
The answer is -3 - 2/3
Step-by-step explanation:
Just subtract
Can someone help me? I’ll reward points + brainalist
Answer:
C
Step-by-step explanation:
radius squared * pi = 63.585
Anyone help please? Thanks!
Please Help Timed Question. Picture provided below.
Answer:
17.67 mpg
Step-by-step explanation:
The fuel efficiency is given by :
[tex]\eta=1.437+0.541\times s[/tex]
We need to find the fuel efficiency for a speed of 30 mph
Put the value of s equals 30 mph in the above equation.
[tex]\eta=1.437+0.541\times 30\\\\\eta=17.67\ mpg[/tex]
So, the required fuel efficiency is equal to 17.67 mpg.
What is the diameter of C?
22 cm
3.25 cm
6.5 cm
13 cm
Answer:
13
Step-by-step explanation:
radius is half of the diameter so is the radius is 6.5cm then the diameter is 13 problem solved....
Answer:
13 cm
Step-by-step explanation:
Radius is half a circle & if
Radius times two that would equals diameter
6.5(2) = 13
40 of the cats at the pet store are black, which is 25% of all cats. How many cats are there at the pet store
Answer:
There are 160 cats at the store.
Step-by-step explanation:
There are 40 black cats, which is 25% of all the cats. You are trying to find all the cats at the store, or 100% of the cats at the store. So:
40 = 25%
40(4) = 25% (4)
160 = 100%
There are 160 cats at the store.
Answer:
160
Step-by-step explanation:
25%=1/4=0.25
=40×4
=160
a 5kg bag of peas cost $17.91 at the same rate what would a 9kg bag of peas cost
Answer:
17.91÷5=3.582
then
3.582×9=32.238
or 32.2 or just 32
Step-by-step explanation:
when you see something like this all you have to do is divide the two number then with that number just multiply.
What is the correct answer?
Answer:
6 units right 3 units down
Step-by-step explanation:
Luis walked for 16 minutes. Natalie walked for w minutes. Luis walked twice as long as Natalie. How long did Natalie walk?
Answer:
Natalie walked for 4 minutes because 16 divided by 2 is 4
Answer:
8
Step-by-step explanation:
16/2=8
Which expression is equivalent to (6 · p) + 3?
FO3-6.p)
G.
3+ (p. 6)
HO6 + 3-p
J. O 6.(+ 3)
How can you changee u fraction into a decimal
can someone give me tips for flying on an airplane? ✈️
Answer:
chew gum for your ears
bring a pillow for you neck
download a movie
bring something to do with your hands
bring a jacket
use the restoroom before the flight
bring your own snacks
get a seat near the wings of the planes its the safest
make sure you put your name on your luggage
bring headphones
bring lots of fluids after getting through security
bring a breathable mask
Step-by-step explanation:
Which number is a reasonable estimate for 39x24?
Answer:
800
Step-by-step explanation:
I rounded 39 to 40 and 24 to 20 to get numbers that are eadult multiplied
then we can do 40*20 which is 800 using mental math
hope this helps <3
Answer:
1000
Step-by-step explanation:
4*2 = 8
40 * 20 = 800
4*5 = 20
40* 5 = 200
40 * 20 + 40 * 5 = 800 + 200 = 1000
40 * 25 = 1000
2/3 times 21=
i need help again!!!
Answer:
14
Step-by-step explanation:
What is the value of x in the right triangle shown? 25 cm 7 cm
Answer:
x = 24
Step-by-step explanation:
a^2 + b^2 = c^2
7^2 + b^2 = 25^2
49 + b^2 = 625
-49 -49
b^2 = 576
square root them
b = 24, or x = 24
Hope this helped! Have a nice day! Plz mark as brainliest!!!
-XxDeathshotxX
Answer: 24
Step-by-step explanation:
A^2 + B^2 = C^2
help i need step by step 15 points
Answer:
With what exactly can i help u with??
Answer:?
Step-by-step explanation:
What is the converse of the statement? if p then q
A If q, then p.
B If not p, then q.
C If not p, then not q.
D If not q, then not p.
